MATH 732-According to the IRS, 2012 tax returns showed

Subject: Mathematics    / Statistics
Question

According to the IRS, 2012 tax returns showed an average refund of $2137 with a standard deviation of 1677. Assume that 2012 tax returns are normally distributed.

find the probability a randomly selected 2012 tax return showed an amount less than or equal to $4426 or greater than $5211. It can be used in an excel worksheet